Though the film follows the book with reasonable accuracy what is "Hidden" is that the Triffids Did Not Come With The Meteor Storm...
In fact they were a "Food Source" developed in Soviet Countries which was "Stolen" by means of a Light Aircraft, which crashed in a jungle and, from there self-propagated to cover the world - Particularly the UK where the film is mainly based.
And that Meteor Storm? That was a ruse by JW to remove a significant number of the population in order that the "Main Cast" could reach safety and of course, rescue a number of blinded people on the way.

The role of the blind girl that "Susan" ) played by Janina Faye in this film meets is played by Carole Ann Ford who also played a character called :"Susan" . Susan Foreman whose grandfather was a Timelord from Gallifrey known as "The Doctor" when the series began way back in 1963

The mention of Janette Scott fighting a "Triffid that spits poison and kills" in the song "Science Fiction Double Feature" from THE ROCKY HORROR PICTURE SHOW refers to this movie.

John Wyndham was also the author of THE MIDWICH CUCKOOS (aka VILLAGE OF THE DAMNED) another book that has been remade more than once as a movie and as a radio series.
Perhaps his best novel (IMHO) is THE KRAKEN WAKES (known in the USA as OUT OF THE DEEPS)and that one has never been filmed. thank God! I say "Thank God" because even the best CGI going will be someone else's vision not mine or yours or anyone else's who just reads the book.
And that would be a shame.

This is actually a good movie, unlike many a schlocky sci-fi that was made around the same time. It has a good storyline, suspense, well-drawn characters and good production values for the time.

The Triffids themselves are a bit cheesy, but we can't really blame them for not having CGI.

If you like old sci-fi's you'll probably like this one.